Yes - if the function is called by entering it in a cell, it can only
return values (that applies to functions called by functions called by
entering in a cell, too, so you can't get away with layering the
functions).

In article ,
SteelAdept wrote:

Thanks but it is only applied to a cell - at least I believe it is. How can
you tell? I have a cell with a formula in it that looks similar to this:
"=DecideColor("8/18/2000","9/14/2008")". This is how I invoke it. Would
that be a worksheet function?